真相是，生活既美妙又可怕，既迷人又恐怖，既甜蜜又苦涩，这就是一切。

The best way to learn mathematics is to do mathematics.

I don't rap for dead presidents. I'd rather see the president dead.

The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.

Love is the strongest force in the world.

现在，对于做了很小错事的人，人们都知道他做错了并谴责他；对于犯了大的过错，以至于攻打别的国家的人，人们却不知道谴责他，反而跟着赞美这种行为，说这是义。